Synonyms: 1H-3a,7-Methanoazulene,2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-, [3R-(3a,3ab,7b,8aa)]-; Cedr-8-ene (8CI); a-Cedrene (6CI,7CI); (-)-Cedrene; (-)-a-Cedrene; Levo-a-cedrene; [3R-(3a,3ab,7b,8aa)]-2,3,4,7,8,8a-Hexahydro-3,6,8,8-tetramethyl-1H-3a,7-methanoazulene